cip-grafana-tempgraph-extract: refactor

cip-grafana-tempgraph-extract

@@ -3,13 +3,18 @@
 set -eu
 
 CURDATE=$(date +%s)
+OUTDIR=/var/www/temperature
 
 url() {
         olddate=$(date --date="$1" +%s)
         printf "http://localhost:3621/render/dashboard-solo/db/public-temperature?orgId=1&from=%d000&to=%d000&panelId=1&width=1000&height=500&theme=light" "${olddate}" "${CURDATE}"
 }
 
-/usr/bin/curl -H 'X-Remote-User: nobody' "$(url '24 hours ago')" > /var/www/temperature/day.png
-/usr/bin/curl -H 'X-Remote-User: nobody' "$(url '7 days ago')" > /var/www/temperature/week.png
-/usr/bin/curl -H 'X-Remote-User: nobody' "$(url '30 days ago')" > /var/www/temperature/month.png
-/usr/bin/curl -H 'X-Remote-User: nobody' "$(url '360 days ago')" > /var/www/temperature/year.png
+fetch() {
+	/usr/bin/curl -H 'X-Remote-User: nobody' "$(url "$1")" > "${OUTDIR}/${2}.png"
+}
+
+fetch "24 hours ago" day
+fetch "7 days ago"   week
+fetch "30 days ago"  month
+fetch "360 days ago" year